Adjustable package sealing apparatus



Dec. 8, 1931. w. H. MCCOLM 1,835,797

ADJUSTABLE PACKAGE SEALING APPARATUS Filed Aug. 24, 1929 way/7 (04M Patented Dec. 8, 1931 WE STATES- WILLIAM H. mcconmor DENVER, coLoR no 1 nnJnsrABnE PACKAGE SEALING APPARATUS l 7 Application filed August 24, 1929. tra n... 388,090.

This invention relates to'an adjustable sealing device and has for its principal 'ob{ ject the provision of a device of this character which will eificientlyope'rate to :press 5 the flaps of box-board'and corrugated board packages in is setting. 5 I v Another object of the invention is to so construct the device that it canbe quickly 19 adapted to sealing packages of various shapes and sizes.

A further object of this invention is to so construct the device that a series of packages can be placed therein so that when the final package has been placed the first package can be removed, thus making the operation of the apparatus practically continuous.-

Other objects and advantages reside in the detail construction of the invention which is designed for simplicity economy, and efficiency. These will become more apparent from the following description.

In the following detailed description of the invention reference is had to the accompanying drawings which forms a part hereof. Like numerals refer to like parts in all views of the drawings and throughout the description.

In the drawings:

53 Fig. 1 is a perspective view of the complete invention in use.

Fig. 2 is an end elevation thereof.

Fig. 3 is a vertical sectiontherethrough.

J The invention comprises a pair of supporting standards 10 carried on cross feet 11. Extending between the standards 10 at the bottom is a bottom brace 12 and extending between the standards 10 at the top is a pair of cross members 13 and 14. p

A series of vertical struts 15 extend between the cross members 13 and 14 and are clamped in place therein by means of clamp bolts 16. Immediately in front of each of the struts 15, a vertical sliding shaft 17 is positioned which, terminates at its bottom in a flange 18 which in turn is secured to a pressure plate 19. The shafts ,17 are constantly forced upwardly by means of compression springs 20 which surround them and place while the sealing cement extendfbetween theupper cross member 13- and a flange 21' formedon the shafts The shafts 17 can be forced downwardly by means of operating handles 22, one end of each of whichispivoted to eachof the struts 65' 15 asshown at 23. The pivoted extremities of the operating handles 22 are bent; as shown at '24, to form one member ofa toggle joint. The other member comprises a link 25 which is secured at 26 tothe shaft 17. The upward movement of thelevers 22 is limited by the uppercross brace 13. Thedownward, move. m'ent-thereof is limited by a stop bar 27 which extends entirely across the ideviceand is se-v cured'to the fronts of the struts 15.

;The packagesto be sealed, such'asindi cated a.t2 8,-]5i, 1, are supported upon ashelf 29. i The shelf 29. is carried upon a longitiidi-j nal shelf member 30 the extremities of which extend through vertical slots 31in the supporting standards 10, Suitablebrace's 32 are provided to rigidly support the shelf 29 upon the longitudinal member 30 Uponthe; external face of each of the standards 10 an endless chain 33 extends between an upper sprocket 34 and a lower sprocket 35.: The upper sprocket 341s s'ecured on the extremities of a cross shaft 36- which extends'entirely across the device. The lower sprockets 35 are i 1y,, i d1er. sprockets and may be securedto the standards 10 in anydes'ired' manner. I

The shaft I 36 may be rotated by means of w an operating ,crank'37secured to one ofthe sprockets f34 at one extremity of the appa-g ratus. The longitudinal shelf mmb'eri30is secured at its extremities, means of 'at-. tachment clips 38, l to" each iof the. chains 33. Thus anymOVementof'the chains will "be; im

partedto th e shelf 29. The shelf 29 is'maintained in any (desired elevated position by means'of a ratchetwheel 39 secured t-o'the shaft 36 so 'asto co-operatewitha suitable hand operated pawl 40. Let us assume that; packages of a, certain: size areto be sealed; The operator places a" trial package upon the shelf 29 and rotates the crank 37 to bring the package to a position slightly below the pressure plate 19, when in the raised position. He now sets the shelf in this position by means of the pawl 40, and the machine is ready for use upon this size and type of package. This setting may be also accomplished without a trial package by means of a scale 41 carried by one of the standards 10, upon which a shelf pointer 42 indicates the position, of the shelf. Thus, the operator may know that a certain size of package requires a shelf setting of 4 He can by means of the crank 3'7 q y bring the elf o this set ng s that the apparatus will be ready for use.

The apparatus may be used for sealing both the bottoms and the tops of packages. For instance, the package may be filled and th flaps at one end cem nted in place, then inverted and the flaps 0.11 the Qther'end .cemented in place, Itis then slid upon the shelf 29 immediately below one of the pressure plates 19. The handle 22 is forced down- Wardly t0 t e broke lin position of ig- 3,

causing the pressure plate to'press' or squeeze the package between it and the shelf 29. The o gle etien f t e l p ion 2 an the link 25 in passingtheir dead center point, maintains the handle in the lowermost position against the stop 27 while the operator is placing the package under the next pressure plate. This operation is continued throughout the length of the apparatus.

When a package has been placed under the ast pres ur pl t and it perating handle 2 operated, th cement ha usu lly'set fliier s that the pa k g nde t st pl can be removed and replaced by a new package, thus makingthe operation of the appaetu sub tantial y n us.

As soon as the operating handles 22 are lifted from the stop bar 27 the springs 20 will raise the shafts 17 so as to release the package and will maintain them in their raised position until again manually operated.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may e vari d, W th n he pe f he pp n ed claims, without departing from thej's pirit. of he n entieu- Having thu d sc ib r ve ion, .Wh

is claimed and desired secured Letters Patent is 1, An adjustable shelf for package sealing machines. comprising; a pair of standards proyided witha vertical slot; a shelf extending between said standards; a longitudinal member supporting said shelf and extend-.

ing at its extremities through the slots in said standard; means carried by said standards for ralsing or lowering the extremities of said longitudinal member so asto change the height of said shelf, said latter means comprising: endless chains; a cross shaft extending between said standards; sprockets carried by said cross shafts and arranged to. support sa d ch s; d means fo r a ing d.

shafts, said longitudinal member being secured at its extremities to said chains.

2. An adjustable shelf for package sealing machines comprising: a pair of standards provided with a vertical slot; a shelf extending between said standards; a longitudinal member supporting said shelf and extending at its extremities through the slots-in said standard; means carried by said standards for raising or lowering the extremities of said longitudina l me nber so as to change the height of said shelf, said latter means comprising endless chains; a cross shaft extending between said standards; sprockets carried by said cross shaft and arranged to sup- IOU 

